JP2010253514A - Nozzle for continuous casting and method for fixing screw for gas supply pipe connection in the nozzle for continuous casting - Google Patents

Nozzle for continuous casting and method for fixing screw for gas supply pipe connection in the nozzle for continuous casting Download PDF

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JP2010253514A
JP2010253514A JP2009107247A JP2009107247A JP2010253514A JP 2010253514 A JP2010253514 A JP 2010253514A JP 2009107247 A JP2009107247 A JP 2009107247A JP 2009107247 A JP2009107247 A JP 2009107247A JP 2010253514 A JP2010253514 A JP 2010253514A
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supply pipe
gas supply
nozzle
screw
head flange
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JP5315121B2 (en
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Takashi Kachi
岳志 加知
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Akechi Ceramics Co Ltd
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Akechi Ceramics Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a nozzle for continuous casting which includes a detent structure for preventing the rotation of a screw for gas supply pipe connection due to the connection of a gas supply pipe, and to provide a method for fixing a screw for gas supply pipe connection in the nozzle for continuous casting. <P>SOLUTION: The nozzle 1 for continuous casting includes: a gas introduction passage 4 provided at the inside of a nozzle body 2 and supplying gas into a nozzle inner hole 3; the screw 5 for gas supply pipe connection for connecting a gas supply pipe 20 supplying gas into the gas introduction passage 4 to the nozzle body 2; and an iron shell 6 wound around the nozzle body 2 near the fitting part of the screw 5 for gas supply pipe connection. The screw 5 for gas supply pipe connection has a head flange 5a provided with corner parts 5A at the outer form, and the iron shell 6 has a head flange insertion hole 6a engaged with the head flange 5a of the screw 5 for gas supply connection and making the head flange 5a nonrotatable. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、ガス供給管接続用ネジを固定した連続鋳造用ノズルおよび連続鋳造用ノズルにおけるガス供給管接続用ネジの固定方法に関するものである。   The present invention relates to a continuous casting nozzle to which a gas supply pipe connecting screw is fixed, and a method for fixing a gas supply pipe connecting screw in the continuous casting nozzle.

従来より、連続鋳造時にノズル内孔を流通する溶鋼中に含まれるアルミ等の成分が酸化してノズル閉塞を発生させることを防止するために、図8に示すように、ノズル本体51内にノズル内孔52と略同心で軸方向に延在して設けられたガス導入路(環状スリット)53を形成し、このガス導入路53を介してアルゴンガス等の不活性ガスをノズル内孔52に供給することにより、内孔への酸化物の付着を防止することが行われている。   Conventionally, in order to prevent components such as aluminum contained in the molten steel flowing through the nozzle bore during continuous casting from oxidizing and causing nozzle blockage, as shown in FIG. A gas introduction path (annular slit) 53 that is substantially concentric with the inner hole 52 and extends in the axial direction is formed, and an inert gas such as argon gas is supplied to the nozzle inner hole 52 through the gas introduction path 53. By supplying, the adhesion of the oxide to the inner hole is prevented.

本件出願人は、上記ガス導入路53内にガスを供給するガス供給管20をノズル本体51の側壁に接続するためのガス供給管接続用ネジ54について先に出願をし、このガス供給管接続用ネジ54にガス供給管20を接続(螺合)させる際に、ガス供給管20の回転に伴ってガス供給管接続用ネジ54が回転しない多角形状の頭部フランジを有したネジ構造を提案した(特許3727632号公報)。   The present applicant has previously filed an application for the gas supply pipe connection screw 54 for connecting the gas supply pipe 20 for supplying gas into the gas introduction path 53 to the side wall of the nozzle body 51, and this gas supply pipe connection. Proposed screw structure having a polygonal head flange that prevents the gas supply pipe connection screw 54 from rotating as the gas supply pipe 20 rotates when the gas supply pipe 20 is connected (screwed) to the screw 54 (Japanese Patent No. 3727632).

また、このようなガス供給管接続用ネジ54をノズル本体51に取り付ける場合、ノズル本体51のネジ取り付け孔55に直接ガス供給管接続用ネジ54を取り付けるが、耐火物からなるノズル本体51はせん断応力に対して十分な強度を有していないため、ガス供給管20を取り付ける際にノズル本体51が破壊されてしまうことがある。この問題を解決するために、図9に示すように、ガス供給管接続用ネジ54を取り付ける部位付近のノズル本体51の外周を鉄皮56で巻いて補強することが行われている。
特許3727632号公報
When such a gas supply pipe connection screw 54 is attached to the nozzle body 51, the gas supply pipe connection screw 54 is directly attached to the screw attachment hole 55 of the nozzle body 51. However, the nozzle body 51 made of refractory is sheared. Since it does not have sufficient strength against stress, the nozzle body 51 may be destroyed when the gas supply pipe 20 is attached. In order to solve this problem, as shown in FIG. 9, the outer periphery of the nozzle body 51 in the vicinity of the portion to which the gas supply pipe connection screw 54 is attached is wound and reinforced with an iron shell 56.
Japanese Patent No. 3727632

本発明は、この鉄皮を利用して、ガス供給管の回転に伴ってガス供給管接続用ネジがより確実に回転しないよう想起されたものであり、すなわち、本発明の課題は、ガス供給管の接続に伴ってガス供給管接続用ネジが回転してしまうことがない回り止め構造を備えた連続鋳造用ノズルおよび連続鋳造用ノズルにおけるガス供給管接続用ネジの固定方法を提供することにある。   The present invention has been conceived so that the gas supply pipe connection screw does not rotate more reliably with the rotation of the gas supply pipe by using this iron skin. To provide a continuous casting nozzle having a detent structure in which a gas supply pipe connection screw does not rotate with the connection of the pipe, and a method of fixing the gas supply pipe connection screw in the continuous casting nozzle is there.

上記課題を解決するものは、ノズル本体内に設けられノズル内孔にガスを供給可能なガス導入路と、該ガス導入路内にガスを供給するガス供給管をノズル本体に接続するためのガス供給管接続用ネジと、該ガス供給管接続用ネジの取り付け部位付近のノズル本体に巻回された鉄皮とを有した連続鋳造用ノズルであって、前記ガス供給管接続用ネジは外形に角部を備えた頭部フランジを有し、前記鉄皮は前記ガス供給管接続用ネジの前記頭部フランジと係合して前記頭部フランジを回転不能とする頭部フランジ嵌入穴を有していることを特徴とする連続鋳造用ノズルである。   In order to solve the above problems, a gas introduction path provided in the nozzle body and capable of supplying gas to the nozzle bore and a gas supply pipe for supplying gas into the gas introduction path are connected to the nozzle body. A nozzle for continuous casting having a supply pipe connecting screw and an iron skin wound around a nozzle body in the vicinity of the attachment site of the gas supply pipe connecting screw, wherein the gas supply pipe connecting screw has an outer shape. A head flange having a corner portion, and the iron skin has a head flange insertion hole that engages with the head flange of the gas supply pipe connecting screw to make the head flange unrotatable. This is a continuous casting nozzle.

また、上記課題を解決するものは、ノズル本体内に設けられノズル内孔にガスを供給可能なガス導入路と、該ガス導入路内にガスを供給するガス供給管をノズル本体に接続するためのガス供給管接続用ネジと、該ガス供給管接続用ネジの取り付け部位付近のノズル本体に巻回された鉄皮とを有した連続鋳造用ノズルであって、前記ガス供給管接続用ネジは外形に角部を備えた頭部フランジを有し、前記鉄皮は前記ガス供給管接続用ネジを挿通可能なネジ挿通穴を有し、前記ガス供給管接続用ネジは前記鉄皮に固着され前記頭部フランジを回転不能に保持するネジ固定用部材により保持されていることを特徴とする連続鋳造用ノズルである。   Moreover, what solves the said subject is for connecting the gas supply path which is provided in a nozzle main body and can supply gas to a nozzle inner hole, and supplies the gas in this gas introduction path to a nozzle main body. A continuous casting nozzle having a gas supply pipe connecting screw and an iron skin wound around a nozzle body in the vicinity of an attachment site of the gas supply pipe connecting screw, wherein the gas supply pipe connecting screw is It has a head flange with a corner in the outer shape, the iron skin has a screw insertion hole through which the gas supply pipe connection screw can be inserted, and the gas supply pipe connection screw is fixed to the iron skin. The nozzle for continuous casting, wherein the nozzle is held by a screw fixing member that holds the head flange in a non-rotatable manner.

さらに、上記課題を解決するものは、ノズル本体内に設けられノズル内孔にガスを供給可能なガス導入路と、該ガス導入路内にガスを供給するガス供給管をノズル本体に接続するためのガス供給管接続用ネジと、該ガス供給管接続用ネジの取り付け部位付近のノズル本体に巻回された鉄皮とを有した連続鋳造用ノズルであって、前記ガス供給管接続用ネジは外形に角部を備えた頭部フランジを有し、前記鉄皮は前記ガス供給管接続用ネジの前記頭部フランジと係合して前記頭部フランジを回転不能とする頭部フランジ嵌入穴を有し、前記ガス供給管接続用ネジは前記鉄皮の前記頭部フランジ嵌入穴により保持されていることを特徴とする連続鋳造用ノズルにおけるガス供給管接続用ネジの固定方法である。   Furthermore, what solves the above-mentioned problem is to connect a gas introduction path provided in the nozzle body and capable of supplying gas to the nozzle bore and a gas supply pipe for supplying gas into the gas introduction path to the nozzle body. A continuous casting nozzle having a gas supply pipe connecting screw and an iron skin wound around a nozzle body in the vicinity of an attachment site of the gas supply pipe connecting screw, wherein the gas supply pipe connecting screw is A head flange having a corner portion on the outer shape, and the iron skin has a head flange insertion hole that engages with the head flange of the gas supply pipe connecting screw and makes the head flange unrotatable. The gas supply pipe connecting screw is held by the head flange fitting hole of the iron skin, and is a method for fixing a gas supply pipe connecting screw in a continuous casting nozzle.

さらに、上記課題を解決するものは、ノズル本体内に設けられノズル内孔にガスを供給可能なガス導入路と、該ガス導入路内にガスを供給するガス供給管をノズル本体に接続するためのガス供給管接続用ネジと、該ガス供給管接続用ネジの取り付け部位付近のノズル本体に巻回された鉄皮とを有した連続鋳造用ノズルであって、前記ガス供給管接続用ネジは外形に角部を備えた頭部フランジを有し、前記鉄皮は前記ガス供給管接続用ネジを挿通可能なネジ挿通穴を有し、前記ガス供給管接続用ネジは前記鉄皮に固着され前記頭部フランジを回転不能に保持するネジ固定用部材により保持されていることを特徴とする連続鋳造用ノズルにおけるガス供給管接続用ネジの固定方法である。   Furthermore, what solves the above-mentioned problem is to connect a gas introduction path provided in the nozzle body and capable of supplying gas to the nozzle bore and a gas supply pipe for supplying gas into the gas introduction path to the nozzle body. A continuous casting nozzle having a gas supply pipe connecting screw and an iron skin wound around a nozzle body in the vicinity of an attachment site of the gas supply pipe connecting screw, wherein the gas supply pipe connecting screw is It has a head flange with a corner in the outer shape, the iron skin has a screw insertion hole through which the gas supply pipe connection screw can be inserted, and the gas supply pipe connection screw is fixed to the iron skin. A gas supply pipe connecting screw fixing method in a continuous casting nozzle, wherein the head flange is held by a screw fixing member that holds the head flange in a non-rotatable manner.

請求項1に記載した発明によれば、鉄皮に設けられた頭部フランジ嵌入穴がガス供給管接続用ネジの頭部フランジを回転不能に保持するため、ガス供給管の接続に伴ってガス供給管接続用ネジが回転してしまうことがない。
請求項2に記載した発明によれば、鉄皮に設けられたネジ固定用部材がガス供給管接続用ネジの頭部フランジを回転不能に保持するため、ガス供給管の接続に伴ってガス供給管接続用ネジが回転してしまうことがない。
請求項3に記載した発明によれば、鉄皮に設けられた頭部フランジ嵌入穴がガス供給管接続用ネジの頭部フランジを回転不能に保持するため、ガス供給管の接続に伴ってガス供給管接続用ネジが回転してしまうことがない。
請求項4に記載した発明によれば、鉄皮に設けられたネジ固定用部材がガス供給管接続用ネジの頭部フランジを回転不能に保持するため、ガス供給管の接続に伴ってガス供給管接続用ネジが回転してしまうことがない。
According to the first aspect of the present invention, the head flange insertion hole provided in the iron skin holds the head flange of the gas supply pipe connecting screw in a non-rotatable manner. The supply pipe connecting screw does not rotate.
According to the second aspect of the present invention, the screw fixing member provided on the iron skin holds the head flange of the gas supply pipe connecting screw in a non-rotatable manner. The pipe connection screw does not rotate.
According to the third aspect of the present invention, the head flange insertion hole provided in the iron skin holds the head flange of the gas supply pipe connecting screw in a non-rotatable manner. The supply pipe connecting screw does not rotate.
According to the invention described in claim 4, since the screw fixing member provided on the iron shell holds the head flange of the gas supply pipe connecting screw in a non-rotatable manner, the gas supply is performed along with the connection of the gas supply pipe. The pipe connection screw does not rotate.

本発明の連続鋳造用ノズルの一実施例の一部正面図である。It is a partial front view of one Example of the nozzle for continuous casting of this invention. 図1のA−A線部分拡大断面図である。It is an AA line partial expanded sectional view of FIG. 本発明の連続鋳造用ノズルにおける鉄皮の一実施例の正面図である。It is a front view of one Example of the iron skin in the nozzle for continuous casting of this invention. 図3に示した鉄皮の斜視図である。FIG. 4 is a perspective view of the iron skin shown in FIG. 3. 本発明の連続鋳造用ノズルの他の実施例の一部正面図である。It is a partial front view of the other Example of the nozzle for continuous casting of this invention. 図5のA−A線部分拡大断面図である。FIG. 6 is a partial enlarged sectional view taken along line AA in FIG. 5. 本発明の連続鋳造用ノズルにおける鉄皮の他の実施例の斜視図である。It is a perspective view of the other Example of the iron skin in the nozzle for continuous casting of this invention. ガス供給管を接続する連続鋳造用ノズルを説明するための縦断面図である。It is a longitudinal cross-sectional view for demonstrating the nozzle for continuous casting which connects a gas supply pipe | tube. 従来の連続鋳造用ノズルにおけるガス供給管接続用ネジの固定方法を説明するための一部正面図である。It is a partial front view for demonstrating the fixing method of the screw for gas supply pipe | tube connection in the conventional nozzle for continuous casting.

本発明は、鉄皮によってガス供給管接続用ネジの頭部フランジが回転不能に保持されることで、ガス供給管の接続に伴ってガス供給管接続用ネジが回転してしまうことがない連続鋳造用ノズルを実現した。   In the present invention, the head flange of the gas supply pipe connection screw is held non-rotatably by the iron skin, so that the gas supply pipe connection screw does not rotate with the connection of the gas supply pipe. A casting nozzle was realized.

この実施例の連続鋳造用ノズル1は、図1または図2に示すように、ノズル本体2内に設けられノズル内孔3にガスを供給可能なガス導入路4と、ガス導入路4内にガスを供給するガス供給管20をノズル本体2に接続するためのガス供給管接続用ネジ5と、ガス供給管接続用ネジ5の取り付け部位付近のノズル本体2に巻回された鉄皮6とを有した連続鋳造用ノズルであって、ガス供給管接続用ネジ5は外形に角部5Aを備えた頭部フランジ5aを有し、鉄皮6はガス供給管接続用ネジ5の頭部フランジ5aと係合して頭部フランジ5aを回転不能とする頭部フランジ嵌入穴6aを有している。以下、各構成について順次詳述する。   As shown in FIG. 1 or FIG. 2, the continuous casting nozzle 1 of this embodiment includes a gas introduction path 4 provided in the nozzle body 2 and capable of supplying gas to the nozzle inner hole 3, and a gas introduction path 4. A gas supply pipe connection screw 5 for connecting a gas supply pipe 20 for supplying gas to the nozzle body 2, and an iron skin 6 wound around the nozzle body 2 near the attachment site of the gas supply pipe connection screw 5; The gas supply pipe connecting screw 5 has a head flange 5a having a corner 5A on the outer shape, and the iron skin 6 is a head flange of the gas supply pipe connecting screw 5. It has a head flange insertion hole 6a that engages with 5a to make the head flange 5a unrotatable. Hereinafter, each configuration will be described in detail.

連続鋳造用ノズル1は、タンディッシュ内の金属溶湯をモールドに注入するノズルであって、上部付近をタンディッシュの溶鋼排出口に気密に接続し、下部付近をモールド内に挿入浸漬して使用するものである。   The continuous casting nozzle 1 is a nozzle for injecting molten metal in a tundish into a mold, and the upper part is hermetically connected to the molten steel discharge port of the tundish, and the lower part is inserted and immersed in the mold for use. Is.

ノズル本体2の中心には軸方向にノズル内孔3が貫通しており、このノズル内孔3に溶融金属が流通可能に構成されている。また、ノズル本体2内にはノズル内孔3と略同心でかつ軸方向に延在して設けられたガス導入路(環状スリット)4が形成されており、このガス導入路4を介してアルゴンガス等の不活性ガスがノズル内孔3に供給されることで内孔への酸化物の付着が防止されるよう構成されている。   A nozzle inner hole 3 penetrates in the center of the nozzle body 2 in the axial direction, and the molten metal can be circulated through the nozzle inner hole 3. Further, a gas introduction path (annular slit) 4 is formed in the nozzle body 2 so as to be substantially concentric with the nozzle inner hole 3 and extending in the axial direction. By supplying an inert gas such as a gas to the nozzle inner hole 3, the oxide is prevented from adhering to the inner hole.

ノズル本体2の側壁には、ガス導入路4と連通するネジ取り付け孔10が形成され、このネジ取り付け孔10には、図2に示すように、ガス導入路4内にガスを供給するガス供給管20をノズル本体2に接続するためのガス供給管接続用ネジ5が取り付けられている。   A screw mounting hole 10 communicating with the gas introduction path 4 is formed in the side wall of the nozzle body 2, and a gas supply for supplying gas into the gas introduction path 4 as shown in FIG. A gas supply pipe connection screw 5 for connecting the pipe 20 to the nozzle body 2 is attached.

より具体的には、ネジ取り付け孔10は、ガス供給管接続用ネジ5の頭部フランジ5aを嵌装する嵌装孔10aと、嵌装孔10aに連成されガス供給管接続用ネジ5の雄ネジ5bを螺合する雌ネジ10bとから構成されている。   More specifically, the screw mounting hole 10 includes a fitting hole 10a for fitting the head flange 5a of the gas supply pipe connecting screw 5, and a gas supply pipe connecting screw 5 which is coupled to the fitting hole 10a. It is comprised from the internal thread 10b which screws the external thread 5b.

ガス供給管接続用ネジ5は、圧造等によりネジ本体部5cに正面視(図1参照)正六角形の頭部フランジ5aが一体成形され、ネジ本体部5cの略中心にガス供給孔11を貫通させ、該ガス供給孔11形成内面にガス供給管接続用雌ネジ5dを形成すると共に、ネジ本体部5cの外周に雄ネジ5bを形成したものである。なお、この正六角形状の頭部フランジ5aの各頂角が回り止め用の角部5Aを構成している。   The screw 5 for connecting the gas supply pipe is integrally formed with a head hexagonal flange 5a when viewed from the front (see FIG. 1) by forging or the like, and penetrates the gas supply hole 11 substantially at the center of the screw body 5c. Then, a gas supply pipe connecting female screw 5d is formed on the inner surface of the gas supply hole 11 and a male screw 5b is formed on the outer periphery of the screw main body 5c. Each apex angle of the regular hexagonal head flange 5a constitutes a corner portion 5A for preventing rotation.

そして、ネジ取り付け孔10に取り付けたガス供給管接続用ネジ5の頭部フランジ5aと嵌装孔10aとの隙間には、図1に示すように耐火モルタル12が充填硬化され、ガス供給管接続用ネジ5が固定されると共に、ガス供給管20が連続鋳造用ノズル1に接続可能に構成される。   Then, a refractory mortar 12 is filled and cured in the gap between the head flange 5a of the gas supply pipe connection screw 5 attached to the screw attachment hole 10 and the fitting hole 10a, as shown in FIG. The gas screw 5 is fixed, and the gas supply pipe 20 is configured to be connectable to the continuous casting nozzle 1.

ガス供給管接続用ネジ5の取り付け部位付近のノズル本体2外周には、図1または図2に示すように、鉄皮6が巻かれ、ガス供給管20を取り付ける際にノズル本体2が破壊されてしまうことがないように補強されている。鉄皮6は、図3または図4のように、ノズル本体2の外周と略同一の長さを有した帯状体6bにて形成されており、ノズル本体2に巻回した後、溶接にて帯状体6bの両端部を連結してノズル本体2の外周に配される。   As shown in FIG. 1 or 2, an iron skin 6 is wound around the outer periphery of the nozzle body 2 in the vicinity of the attachment portion of the gas supply pipe connection screw 5, and the nozzle body 2 is destroyed when the gas supply pipe 20 is attached. It is reinforced so that it does not end up. As shown in FIG. 3 or FIG. 4, the iron skin 6 is formed by a belt-like body 6 b having substantially the same length as the outer periphery of the nozzle body 2, and is wound around the nozzle body 2 and then welded. The both ends of the belt-like body 6 b are connected and arranged on the outer periphery of the nozzle body 2.

鉄皮6は、図1に示すように、ガス供給管接続用ネジ5の角部5Aを備えた頭部フランジ5aと係合して頭部フランジ5aを回転不能とする頭部フランジ嵌入穴6aを有している。この実施例では、頭部フランジ嵌入穴6aは頭部フランジ5aの幅(正六角形のうち平行な二辺の間の距離)より若干大きい横幅を備えた矩形の穴に形成されており、この頭部フランジ嵌入穴6a内に頭部フランジ5aを配すると、頭部フランジ嵌入穴6aの内縁部と頭部フランジ5aの側部とが係合して、鉄皮6が頭部フランジ5aの回転を係止するように構成されている。なお、頭部フランジ嵌入穴は、この矩形形状に限定されるものではなく、角部を備えた頭部フランジの形状に対応して、頭部フランジと係合することで頭部フランジを回転不能に保持可能であればどのような形状でもよく、例えば、ガス供給管接続用ネジの頭部フランジの外形が八角形またはその他の多角形である場合は、頭部フランジ嵌入穴がそれより若干大きい八角形またはその他の多角形に形成されたものなどでもよい。すなわち、頭部フランジ嵌入穴は、少なくとも頭部フランジの外形のうち直線部分に隣接配置されて頭部フランジ嵌入穴の内縁部と頭部フランジの側部とが係合して頭部フランジを回転不能に保持可能であればどのような形状でもよい。   As shown in FIG. 1, the iron skin 6 engages with the head flange 5a having the corner 5A of the gas supply pipe connecting screw 5 to make the head flange 5a unrotatable. have. In this embodiment, the head flange insertion hole 6a is formed in a rectangular hole having a lateral width slightly larger than the width of the head flange 5a (the distance between two parallel sides of the regular hexagon). When the head flange 5a is arranged in the part flange insertion hole 6a, the inner edge of the head flange insertion hole 6a and the side part of the head flange 5a are engaged, and the iron skin 6 rotates the head flange 5a. It is configured to lock. The head flange insertion hole is not limited to this rectangular shape, and the head flange cannot be rotated by engaging with the head flange corresponding to the shape of the head flange having corners. If the outer shape of the head flange of the gas supply pipe connection screw is an octagon or other polygon, the head flange insertion hole is slightly larger than that. It may be an octagon or other polygons. That is, the head flange insertion hole is disposed adjacent to at least a straight portion of the outer shape of the head flange, and the inner edge portion of the head flange insertion hole and the side portion of the head flange engage to rotate the head flange. Any shape is possible as long as it can be held impossible.

このように、本発明の連続鋳造用ノズル1は、鉄皮6がガス供給管接続用ネジ5の頭部フランジ5aを回転不能に保持するため、極めて簡素な構造でガス供給管接続用ネジ5の回転をより確実に抑止できる。   Thus, in the continuous casting nozzle 1 of the present invention, the iron skin 6 holds the head flange 5a of the gas supply pipe connecting screw 5 in a non-rotatable manner, so that the gas supply pipe connecting screw 5 has an extremely simple structure. Rotation can be more reliably suppressed.

つぎに、図5または図6に示した本発明の連続鋳造用ノズルの他の実施例について説明する。
この実施例の連続鋳造用ノズル30は、ノズル本体2内に設けられノズル内孔3にガスを供給可能なガス導入路4と、ガス導入路4内にガスを供給するガス供給管20をノズル本体2に接続するためのガス供給管接続用ネジ5と、ガス供給管接続用ネジ5の取り付け部位付近のノズル本体2に巻回された鉄皮6とを有した連続鋳造用ノズルであって、ガス供給管接続用ネジ5は外形に角部5Aを備えた頭部フランジ5aを有し、鉄皮6はガス供給管接続用ネジ5を挿通可能なネジ挿通穴31を有し、ガス供給管接続用ネジ5は鉄皮6に固着され頭部フランジ5aを回転不能に保持するネジ固定用部材32a,32bにより保持されている。
Next, another embodiment of the continuous casting nozzle of the present invention shown in FIG. 5 or FIG. 6 will be described.
The continuous casting nozzle 30 of this embodiment includes a gas introduction path 4 provided in the nozzle body 2 and capable of supplying gas to the nozzle inner hole 3, and a gas supply pipe 20 for supplying gas into the gas introduction path 4. A continuous casting nozzle having a gas supply pipe connection screw 5 for connection to the main body 2 and an iron skin 6 wound around the nozzle main body 2 in the vicinity of the attachment site of the gas supply pipe connection screw 5. The gas supply pipe connecting screw 5 has a head flange 5a having a corner 5A on the outer shape, and the iron skin 6 has a screw insertion hole 31 through which the gas supply pipe connecting screw 5 can be inserted, so that the gas supply The pipe connecting screw 5 is fixed to the iron shell 6 and is held by screw fixing members 32a and 32b that hold the head flange 5a in a non-rotatable manner.

この実施例の連続鋳造用ノズル30と前述した連続鋳造用ノズル1との相違は、連続鋳造用ノズル1が鉄皮6に設けられた頭部フランジ嵌入穴6aにて頭部フランジ5aを回転不能に係止するのに対して、連続鋳造用ノズル30は鉄皮6に溶接部33にて固着されたネジ固定用部材32a,32bにて頭部フランジ5aを係止する点のみであり他は同じである。同一構成部分については同一符号を付し説明を省略する。   The difference between the continuous casting nozzle 30 of this embodiment and the above-mentioned continuous casting nozzle 1 is that the continuous casting nozzle 1 cannot rotate the head flange 5a through the head flange insertion hole 6a provided in the iron shell 6. In contrast, the continuous casting nozzle 30 is only for locking the head flange 5a with the screw fixing members 32a and 32b fixed to the iron shell 6 by the welded portion 33. The same. The same components are denoted by the same reference numerals and description thereof is omitted.

具体的には、連続鋳造用ノズル30の鉄皮6には、図5に示すように、正面視円形のネジ挿通穴31が設けられており、このネジ挿通穴31自体は頭部フランジ5aと係合せず、溶接部33にて鉄皮に固着されたネジ固定用部材32a,32bが頭部フランジ5aを回転不能に係止する。ネジ固定用部材32a,32bは、2本の長尺材にて構成されており、頭部フランジ5aの外形の角部を繋ぐ直線部分に沿って平行に配された後、溶接部33にて鉄皮6に固着され、これらネジ固定用部材32a,32bによって、頭部フランジ5aが回転不能に係止されている。なお、ネジ固定用部材32a,32bのような係止部材を鉄皮6と別部材で構成することにより、頭部フランジ5aが正面においてどのような角度で取り付けられていても、頭部フランジ5aの外形に沿ってネジ固定用部材を配することで頭部フランジ5aを回転不能に係止できる。また、この実施例のネジ固定用部材は平行に配される2本の長尺材32a,32bで構成されているが、これに限定されるものではなく、頭部フランジ5aの外形の直線部分に沿って配され固着されることで回転を抑止できるものであればどのような形態であってもよく、単数あるいは3以上の複数材からなるものであってもよい。   Specifically, as shown in FIG. 5, the iron skin 6 of the continuous casting nozzle 30 is provided with a screw insertion hole 31 having a circular shape when viewed from the front. The screw insertion hole 31 itself is connected to the head flange 5a. The screw fixing members 32a and 32b that are not engaged and are fixed to the iron shell at the welded portion 33 lock the head flange 5a in a non-rotatable manner. The screw fixing members 32a and 32b are composed of two long materials, and are arranged in parallel along a straight line portion connecting the corners of the outer shape of the head flange 5a. The head flange 5a is fixed to the iron skin 6 and is non-rotatably locked by these screw fixing members 32a and 32b. In addition, by configuring a locking member such as the screw fixing members 32a and 32b as a separate member from the iron skin 6, the head flange 5a can be mounted at any angle on the front surface of the head flange 5a. By arranging the screw fixing member along the outer shape of the head flange 5a, the head flange 5a can be locked so as not to rotate. In addition, the screw fixing member of this embodiment is composed of two long members 32a and 32b arranged in parallel, but is not limited to this, and the linear portion of the outer shape of the head flange 5a As long as it can be prevented from rotating by being arranged along and fixed, it may be in any form, and may be composed of a single material or a plurality of three or more materials.

さらに、図7に示した本発明の連続鋳造用ノズルに使用される鉄皮の他の実施例について説明する。
この実施例の鉄皮46と前述した鉄皮6との基本的な相違は、鉄皮6が一枚の帯状体6bで構成されているのに対して、鉄皮46は2枚でノズル本体2を巻回するように分割された2枚の帯状体46a,46bとから構成されている点である。
Further, another embodiment of the iron skin used for the continuous casting nozzle of the present invention shown in FIG. 7 will be described.
The basic difference between the iron skin 46 of this embodiment and the above-described iron skin 6 is that the iron skin 6 is composed of a single belt-like body 6b, whereas the two iron skins 46 are the nozzle body. 2 is composed of two strips 46a and 46b that are divided so as to wind two.

さらに、本発明の連続鋳造用ノズルにおけるガス供給管接続用ネジの固定方法について図1ないし図4に示した一実施例を用いて説明する。
この実施例の連続鋳造用ノズル1におけるガス供給管接続用ネジ5の固定方法は、ノズル本体2内に設けられノズル内孔3にガスを供給可能なガス導入路4と、ガス導入路4内にガスを供給するガス供給管20をノズル本体2に接続するためのガス供給管接続用ネジ5と、ガス供給管接続用ネジ5の取り付け部位付近のノズル本体2に巻回された鉄皮6とを有した連続鋳造用ノズルであって、ガス供給管接続用ネジ5は外形に角部5Aを備えた頭部フランジ5aを有し、鉄皮6はガス供給管接続用ネジ5の頭部フランジ5aと係合して頭部フランジ5aを回転不能とする頭部フランジ嵌入穴6aを有し、ガス供給管接続用ネジ5は鉄皮6の頭部フランジ嵌入穴6aにより保持されていることを特徴とする固定方法である。
Further, a method of fixing the gas supply pipe connecting screw in the continuous casting nozzle of the present invention will be described with reference to one embodiment shown in FIGS.
The fixing method of the gas supply pipe connection screw 5 in the continuous casting nozzle 1 of this embodiment is as follows: a gas introduction path 4 provided in the nozzle body 2 and capable of supplying gas to the nozzle inner hole 3; A gas supply pipe connection screw 5 for connecting a gas supply pipe 20 for supplying gas to the nozzle main body 2, and an iron skin 6 wound around the nozzle main body 2 in the vicinity of an attachment site of the gas supply pipe connection screw 5 The gas supply pipe connecting screw 5 has a head flange 5a having a corner 5A on its outer shape, and the iron skin 6 is the head of the gas supply pipe connecting screw 5 It has a head flange insertion hole 6a that engages with the flange 5a so that the head flange 5a cannot rotate, and the gas supply pipe connection screw 5 is held by the head flange insertion hole 6a of the iron skin 6. The fixing method characterized by the above.

この連続鋳造用ノズル1におけるガス供給管接続用ネジ5の固定方法では、鉄皮6に設けられた頭部フランジ嵌入穴6aに、ガス供給管接続用ネジ5の角部5Aを備えた頭部フランジ5aを係合させるのみで頭部フランジ5aを回転不能とすることができる。より具体的には、頭部フランジ嵌入穴6aは頭部フランジ5aの幅(正六角形のうち平行な二辺の間の距離)より若干大きい横幅を備えた矩形の穴に形成されており、この頭部フランジ嵌入穴6a内に頭部フランジ5aを配すると、頭部フランジ嵌入穴6aの内縁部と頭部フランジ5aの側部とが係合して、鉄皮6が頭部フランジ5aの回転を係止して固定する。   In this method of fixing the gas supply pipe connecting screw 5 in the continuous casting nozzle 1, a head provided with a corner 5 </ b> A of the gas supply pipe connecting screw 5 in a head flange fitting hole 6 a provided in the iron skin 6. The head flange 5a can be made non-rotatable only by engaging the flange 5a. More specifically, the head flange insertion hole 6a is formed in a rectangular hole having a lateral width slightly larger than the width of the head flange 5a (the distance between two parallel sides of the regular hexagon). When the head flange 5a is arranged in the head flange insertion hole 6a, the inner edge portion of the head flange insertion hole 6a and the side portion of the head flange 5a are engaged, and the iron 6 is rotated by the head flange 5a. Lock and fix.

さらに、本発明の連続鋳造用ノズルにおけるガス供給管接続用ネジの他の固定方法について図5または図6に示した一実施例を用いて説明する。
この実施例の連続鋳造用ノズル30におけるガス供給管接続用ネジ5の固定方法は、ノズル本体2内に設けられノズル内孔3にガスを供給可能なガス導入路4と、ガス導入路4内にガスを供給するガス供給管20をノズル本体2に接続するためのガス供給管接続用ネジ5と、ガス供給管接続用ネジ5の取り付け部位付近のノズル本体2に巻回された鉄皮6とを有した連続鋳造用ノズルであって、ガス供給管接続用ネジ5は外形に角部5Aを備えた頭部フランジ5aを有し、鉄皮6はガス供給管接続用ネジ5を挿通可能なネジ挿通穴31を有し、ガス供給管接続用ネジ5は鉄皮6に固着され頭部フランジ5aを回転不能に保持するネジ固定用部材32a,32bにより保持されていることを特徴とする固定方法である。
Furthermore, another method for fixing the gas supply pipe connecting screw in the continuous casting nozzle of the present invention will be described with reference to one embodiment shown in FIG. 5 or FIG.
The fixing method of the gas supply pipe connecting screw 5 in the continuous casting nozzle 30 of this embodiment is as follows: a gas introduction path 4 provided in the nozzle body 2 and capable of supplying gas to the nozzle inner hole 3; A gas supply pipe connection screw 5 for connecting a gas supply pipe 20 for supplying gas to the nozzle main body 2, and an iron skin 6 wound around the nozzle main body 2 in the vicinity of an attachment site of the gas supply pipe connection screw 5 The gas supply pipe connection screw 5 has a head flange 5a having a corner 5A on the outer shape, and the iron skin 6 can be inserted through the gas supply pipe connection screw 5. The gas supply pipe connecting screw 5 is fixed to the iron skin 6 and is held by screw fixing members 32a and 32b that hold the head flange 5a in a non-rotatable manner. It is a fixing method.

この実施例では、まず、鉄皮6のネジ挿通穴31内にガス供給管接続用ネジ5が露呈する状態で、ガス供給管接続用ネジ5の取り付け部位付近のノズル本体2外周に鉄皮6を巻回して補強する。   In this embodiment, first, in a state where the gas supply pipe connection screw 5 is exposed in the screw insertion hole 31 of the iron skin 6, the iron skin 6 is disposed on the outer periphery of the nozzle body 2 near the attachment portion of the gas supply pipe connection screw 5. Wind up to reinforce.

つぎに、図5に示すように、ネジ固定用部材32a,32bによって頭部フランジ5aを回転不能に保持させる。具体的には、ネジ固定用部材32a,32bは、2本の長尺材にて構成されており、頭部フランジ5aの外形の直線部分に沿って平行に配された後、溶接部33にて鉄皮6に固着されることで、頭部フランジ5aが回転不能に係止固定される。   Next, as shown in FIG. 5, the head flange 5a is held unrotatable by the screw fixing members 32a and 32b. Specifically, the screw fixing members 32a and 32b are composed of two long materials, and are arranged in parallel along the straight line portion of the outer shape of the head flange 5a, and then are attached to the welded portion 33. The head flange 5a is locked and fixed in a non-rotatable manner by being secured to the iron skin 6.

このように、本発明の連続鋳造用ノズルにおけるガス供給管接続用ネジの固定方法によれば、簡素な構造でかつ簡易な方法でガス供給管接続用ネジ5の回転をより確実に抑止できる。   Thus, according to the fixing method of the gas supply pipe connecting screw in the continuous casting nozzle of the present invention, the rotation of the gas supply pipe connecting screw 5 can be more reliably suppressed with a simple structure and a simple method.

1 連続鋳造用ノズル
2 ノズル本体
3 ノズル内孔
4 ガス導入路
5 ガス供給管接続用ネジ
5A 角部
5a 頭部フランジ
5b 雄ネジ
5c ネジ本体部
5d ガス供給管接続用雌ネジ
6 鉄皮
10 ネジ取り付け孔
10a 嵌装孔
10b 雌ネジ
11 ガス供給孔
12 耐火モルタル
20 ガス供給管
DESCRIPTION OF SYMBOLS 1 Nozzle for continuous casting 2 Nozzle main body 3 Nozzle inner hole 4 Gas introduction path 5 Gas supply pipe connection screw 5A Corner | angular part 5a Head flange 5b Male screw 5c Screw main-body part 5d Gas supply pipe connection female screw 6 Iron skin 10 Screw Mounting hole 10a Fitting hole 10b Female thread 11 Gas supply hole 12 Refractory mortar 20 Gas supply pipe

Claims (4)

ノズル本体内に設けられノズル内孔にガスを供給可能なガス導入路と、該ガス導入路内にガスを供給するガス供給管をノズル本体に接続するためのガス供給管接続用ネジと、該ガス供給管接続用ネジの取り付け部位付近のノズル本体に巻回された鉄皮とを有した連続鋳造用ノズルであって、前記ガス供給管接続用ネジは外形に角部を備えた頭部フランジを有し、前記鉄皮は前記ガス供給管接続用ネジの前記頭部フランジと係合して前記頭部フランジを回転不能とする頭部フランジ嵌入穴を有していることを特徴とする連続鋳造用ノズル。   A gas introduction path provided in the nozzle body and capable of supplying gas to the nozzle bore; a gas supply pipe connection screw for connecting a gas supply pipe for supplying gas into the gas introduction path to the nozzle body; and A continuous casting nozzle having an iron skin wound around a nozzle body in the vicinity of an attachment site of a gas supply pipe connection screw, wherein the gas supply pipe connection screw has a head flange having a corner portion on its outer shape. And the iron skin has a head flange insertion hole which engages with the head flange of the gas supply pipe connecting screw and makes the head flange non-rotatable. Nozzle for casting. ノズル本体内に設けられノズル内孔にガスを供給可能なガス導入路と、該ガス導入路内にガスを供給するガス供給管をノズル本体に接続するためのガス供給管接続用ネジと、該ガス供給管接続用ネジの取り付け部位付近のノズル本体に巻回された鉄皮とを有した連続鋳造用ノズルであって、前記ガス供給管接続用ネジは外形に角部を備えた頭部フランジを有し、前記鉄皮は前記ガス供給管接続用ネジを挿通可能なネジ挿通穴を有し、前記ガス供給管接続用ネジは前記鉄皮に固着され前記頭部フランジを回転不能に保持するネジ固定用部材により保持されていることを特徴とする連続鋳造用ノズル。   A gas introduction path provided in the nozzle body and capable of supplying gas to the nozzle bore; a gas supply pipe connection screw for connecting a gas supply pipe for supplying gas into the gas introduction path to the nozzle body; and A continuous casting nozzle having an iron skin wound around a nozzle body in the vicinity of an attachment site of a gas supply pipe connection screw, wherein the gas supply pipe connection screw has a head flange having a corner portion on its outer shape. The iron skin has a screw insertion hole through which the gas supply pipe connection screw can be inserted, and the gas supply pipe connection screw is fixed to the iron skin and holds the head flange in a non-rotatable manner. A nozzle for continuous casting, which is held by a screw fixing member. ノズル本体内に設けられノズル内孔にガスを供給可能なガス導入路と、該ガス導入路内にガスを供給するガス供給管をノズル本体に接続するためのガス供給管接続用ネジと、該ガス供給管接続用ネジの取り付け部位付近のノズル本体に巻回された鉄皮とを有した連続鋳造用ノズルであって、前記ガス供給管接続用ネジは外形に角部を備えた頭部フランジを有し、前記鉄皮は前記ガス供給管接続用ネジの前記頭部フランジと係合して前記頭部フランジを回転不能とする頭部フランジ嵌入穴を有し、前記ガス供給管接続用ネジは前記鉄皮の前記頭部フランジ嵌入穴により保持されていることを特徴とする連続鋳造用ノズルにおけるガス供給管接続用ネジの固定方法。   A gas introduction path provided in the nozzle body and capable of supplying gas to the nozzle bore; a gas supply pipe connection screw for connecting a gas supply pipe for supplying gas into the gas introduction path to the nozzle body; and A continuous casting nozzle having an iron skin wound around a nozzle body in the vicinity of an attachment site of a gas supply pipe connection screw, wherein the gas supply pipe connection screw has a head flange having a corner portion on its outer shape. The iron skin has a head flange fitting hole that engages with the head flange of the gas supply pipe connecting screw and makes the head flange unrotatable, and the gas supply pipe connecting screw Is held by the head flange insertion hole of the iron skin, and a method for fixing a gas supply pipe connecting screw in a continuous casting nozzle. ノズル本体内に設けられノズル内孔にガスを供給可能なガス導入路と、該ガス導入路内にガスを供給するガス供給管をノズル本体に接続するためのガス供給管接続用ネジと、該ガス供給管接続用ネジの取り付け部位付近のノズル本体に巻回された鉄皮とを有した連続鋳造用ノズルであって、前記ガス供給管接続用ネジは外形に角部を備えた頭部フランジを有し、前記鉄皮は前記ガス供給管接続用ネジを挿通可能なネジ挿通穴を有し、前記ガス供給管接続用ネジは前記鉄皮に固着され前記頭部フランジを回転不能に保持するネジ固定用部材により保持されていることを特徴とする連続鋳造用ノズルにおけるガス供給管接続用ネジの固定方法。   A gas introduction path provided in the nozzle body and capable of supplying gas to the nozzle bore; a gas supply pipe connection screw for connecting a gas supply pipe for supplying gas into the gas introduction path to the nozzle body; and A continuous casting nozzle having an iron skin wound around a nozzle body in the vicinity of an attachment site of a gas supply pipe connection screw, wherein the gas supply pipe connection screw has a head flange having a corner portion on its outer shape. The iron skin has a screw insertion hole through which the gas supply pipe connection screw can be inserted, and the gas supply pipe connection screw is fixed to the iron skin and holds the head flange in a non-rotatable manner. A method of fixing a screw for connecting a gas supply pipe in a nozzle for continuous casting, characterized by being held by a screw fixing member.
JP2009107247A 2009-04-27 2009-04-27 NOZZLE FOR CONTINUOUS CASTING AND METHOD FOR FIXING GAS SUPPLY CONNECTION SCREW IN NOZZLE FOR CONTINUOUS CASTING Expired - Fee Related JP5315121B2 (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736045A (en) * 1980-08-12 1982-02-26 Toshiba Ceramics Co Ltd Gas blowing type nozzle for casting
JPS5752252U (en) * 1980-09-08 1982-03-26
JPH0331065U (en) * 1990-07-30 1991-03-26
JP2001087845A (en) * 1999-09-17 2001-04-03 Kurosaki Harima Corp Fitting method for socket to nozzle for casting
JP2001219252A (en) * 2000-02-07 2001-08-14 Akechi Ceramics Co Ltd Gas-blowing nozzle for continuous casting
JP2002001498A (en) * 2000-06-20 2002-01-08 Kurosaki Harima Corp Socket fitting structure of refractory for vent continuous casting
JP3727632B2 (en) * 2003-08-05 2005-12-14 明智セラミックス株式会社 Screw for connecting gas supply pipe of nozzle for continuous casting
JP2007032621A (en) * 2005-07-25 2007-02-08 Akechi Ceramics Co Ltd Gas supply pipe connection screw
JP2010227942A (en) * 2009-03-26 2010-10-14 Akechi Ceramics Co Ltd Nozzle for continuous casting, and method for fixing screw for connecting gas supplying tube in nozzle for continuous casting

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736045A (en) * 1980-08-12 1982-02-26 Toshiba Ceramics Co Ltd Gas blowing type nozzle for casting
JPS5752252U (en) * 1980-09-08 1982-03-26
JPH0331065U (en) * 1990-07-30 1991-03-26
JP2001087845A (en) * 1999-09-17 2001-04-03 Kurosaki Harima Corp Fitting method for socket to nozzle for casting
JP2001219252A (en) * 2000-02-07 2001-08-14 Akechi Ceramics Co Ltd Gas-blowing nozzle for continuous casting
JP2002001498A (en) * 2000-06-20 2002-01-08 Kurosaki Harima Corp Socket fitting structure of refractory for vent continuous casting
JP3727632B2 (en) * 2003-08-05 2005-12-14 明智セラミックス株式会社 Screw for connecting gas supply pipe of nozzle for continuous casting
JP2007032621A (en) * 2005-07-25 2007-02-08 Akechi Ceramics Co Ltd Gas supply pipe connection screw
JP2010227942A (en) * 2009-03-26 2010-10-14 Akechi Ceramics Co Ltd Nozzle for continuous casting, and method for fixing screw for connecting gas supplying tube in nozzle for continuous casting

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